Specifications

be 37 dBm +/- 2 dBm (3.16 W min to
7.94 W max).
4.3.11 (Step 5f) Mea sure the
406.025 MHz Fre quency
En sure that ad e quate at ten u a tion rated
for 406.025 MHz, 37 dBm and 5 Watts is
in stalled be tween the ELT’s 406.025 MHz
out put and the in put to the fre quency
coun ter to pre vent dam ag ing the fre -
quency coun ter’s in put cir cuitry.
Set up the equip ment as shown be low:
Ver ify an ini tial fre quency of 406.025 MHz
+/- 2 KHz.
NOTE: Al low the unit to run 30 sec onds
be fore mak ing the mea sure ment to al low
the os cil la tor to sta bi lize.
4.3.12 (Step 5g) Cur rent Draw
Tests
CAU TION: The fol low ing tests in volve
mea sure ments of the lith ium bat tery pack.
Ex er cise ex treme cau tion to avoid caus ing
a short cir cuit con di tion which will blow
the fuses on the bat tery pack. It is rec
-
om mended that only an ex pe ri enced tech
-
ni cian per form these tests.
A test har ness (p/n 611-0024) may be
or dered from ARTEX Air craft Sup plies at
1-800-547-8901.
All tests must be per formed in an RF
screen room or with the ELT in a
shield-ed con tainer that will sub stan tially
at ten u ate the RF sig nal.
All “ON” state cur rent mea sure ments
must be made with the RF out puts load-
ed with 50 ohms rated for 5 Watts
(ei ther a re sis tive load or equip ment with
50 ohm im ped ance pad ded with 10 dB/ 5
Watt at tenu ator, i.e. a spec trum an a lyzer).
NOTE: The ELT may ac ti vate (turn
“ON”) when the var i ous con nec tions a r e
ini tially made dur ing the fol low ing cur rent
tests. This is nor mal. Re set the unit to
“OFF” ,if this hap pens, by tog gling the
ON/OFF switch to “ON” and back to
“OFF”.
“ARM” (“OFF”) State Cur rent
Mea sure ment:
• Re move the bat tery pack as de scribed
in Sec tion 4.3.3
• Dis con nect the 2-pin har ness
• In stall the test har ness 611-0024 and
an in- line am me ter as shown in Fig ure
4-2
•
En sure the ELT is “OFF”.
• Mea sure the cur rent with the am me ter.
The mea sured cur rent should be 0
microamps (uA) and not more than 6
uA.
“ON” State Cur rent Mea sure -
ment:
NOTE: Cur rent draw dur ing this test
may ex ceed 3.5 Amps dur ing the
406.025 MHz burst. En sure the am me ter
is set on the ap pro pri ate range to ac
-
com mo date this level of cur rent.
•
Ac ti vate the ELT, al low to sta bi lize.
• The mea sured steady state cur rent
should not ex ceed 200 milliamps (mA).
When the 406.025 MHz mod ule is on
(gen er at ing the 406.025 MHz burst)
the cur rent may ex ceed 3.5 Amps.
ARTEX AIRCRAFT SUPPLIES DOCUMENT # 570-5000
12/10/02 PAGE 4-7
Frequency
Counter
Applicable
Attenuator
ELT
TPS (Bottom)
Connector